They often show the view of the multi-arch bridge, as seen from the river, in various TV series and even old films. What I notice is that one of the arches seems to have serious dip in the middle, as if it is on the point of collapsing. Even the stone balustrade, as seen from the road/ footpath seems to exhibit a dip in the middle, over the centre of that arch. No I don't know the name of the bridge, but from working down there, it is probably the bridge where the punts can be hired.
I cannot seem to find any information on it - am I seeing things?